Bulgaria’s economy expanded for an 11th quarter as rising domestic demand offset a drop in exports to European nations struggling to emerge from the debt crisis. Gross domestic product rose 0.4% in the first quarter from a year earlier, compared with a revised 0.6% increase in the previous three months, the Sofia-based Statistics Institute said Wednesday in a preliminary estimate. Seasonally adjusted GDP advanced 0.1% from the previous quarter. Major contribution to the growth came from investment, which increased 2.4% from the fourth quarter. Collective consumption grew 0.9%. Exports of goods and services increased 1.8%.